Study on Fire Detection Technology in Manned Spacecraft
Wang Shu
Deng Tian
Dou Zheng
Yan Shu
Zhu Ming
Abstract：Objective To study and develop a fire detector suitable for spacecraft.Methods Based on the characteristics of manned spacecraft,a dual wavelength ducted smoke detector with high sensitivity was designed.Its sensitivity could be 100 times higher than the ordinary photoelectric detectors.Result Dual-wavelength technology improved the sensitivity against the particulate smaller than 300 nm.It also provided a unique ability to distinguish between fire smoke and interference sources bigger than 1 μm.Conclusion The detector is expected to overcome the disadvantage of low diffusion and reduces the rate of false alarm.In this way,the detector can effectively detect potential danger of fire in very early stage in microgravity environment and prevent manned spacecraft from fire disaster.
Keywords：fire detectiondual-wavelengthhigh sensitivitymicrogravity combustion
Publication Date：2014-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)